runLinking {PROsetta} | R Documentation |
runLinking
is a function to obtain item parameters from the response data, and perform scale linking onto the metric of supplied anchor item parameters.
runLinking(data, method, verbose = FALSE, ...)
data |
a |
method |
the type of linking to perform. Accepts:
Linear transformation methods are performed with |
verbose |
if |
... |
runLinking
returns a list
containing the scale linking results.
constants
linear transformation constants. NA
if method
argument was FIXEDPAR
.
ipar_linked
item parameters calibrated to the response data, and linked to the anchor item parameters.
ipar_anchor
anchor item parameters used in linking.
out_link <- runLinking(data_asq, "SL", technical = list(NCYCLES = 1000))
out_link$constants # transformation constants
out_link$ipar_linked # item parameters linked to anchor
out_link <- runLinking(data_asq, "FIXEDPAR")
out_link$ipar_linked # item parameters linked to anchor